Meat cutting and slicing machine



c:. G. BIRO MEAT CUTTING AND SLICINQ MACHINE April 12, 1938.

2 Sheet-Sheet l lV/H; an ill/112% Original Filed Feb 27, 1936 April 12,1938.

ote. BIRO MEAT CUTTING AND SLICING MACHINE 2 Sheets-Shet 2 OriginalFiled Feb. 27, 1936 Patented Apr. 12, 1938 UNITED STATES PATENT oFFicEMEAT CUTTING AND SLIOING MACHINE Carl G. Biro, Marblehead, Ohio Originalapplication February 27, 1936, Serial No. 66,071. Divided and thisapplication January 28, 1937, Serial No. 122,825

1 Claim.

My invention has for its object to provide means for efficientlyremoving from a band saw particles of materials that may adhere to theband saw. The invention is particularly advantageous in its applicationto band saw machines for meat cutting for the reason that the particlesthat are cut from the meat or, more particularly from the bone, form ahard glazed surface on the band saw and the wheels thus reducing theefficiency of the saw. Frequent removal of the band saw, therefore,becomes necessary in order to remove the material from the wheels thatsupport the saw in order to prevent extreme slippage of the band sawwith respect to the wheels.

In connection with band saw machines, scrapers of different kinds haveheretofore been used for removing such portions of the particles thatmay, lodge on the surfaces of the saw, but the scrapersdo not remove themeat'and bone particlesthat collect on the teeth of the saw, which formthe major portion of the' particles that collect on they saw. Thescrapers do not penetrate the spaces between the edges of the teeth, andthey operate to pack the meat particles between the teeth of the saw.The particles are carried to the wheels where subsequent and similardeposits accumulate and spread over the surfaces of the wheels and theside surfaces of.

the saw and form a hardened glazed surface. For purposes of sanitationand to prevent excess slippage of the band saw on the wheels, themachine must be disassembled and the band saw removed and cleaned, andthe wheels which impel the motion of the saw must also be cleaned. Also,

' by reason of the slight shifting movement of the band saw with respectto the wheels caused by the pressure of the meat against the saw, thematerials, originally conveyed to the wheels by the teeth, are spreadover the portions of the surfaces of the wheels with which the band sawmakes contact, and also over the lateral surfaces of the band saw. By myinvention, I have provided means for removingparticles of the meat andbone from between the teeth of the saw u where the major portion of suchmaterials collects and in the movement of the band saw is deposited onthe wheels.

The invention particularly provides a means both for causing dischargeof the particles of meat and bone from the teeth and directing them awayfrom the body of the saw.

The invention may be contained in sawing machines that partake ofdifferent forms and may be varied in their details and still embody theinvention. To illustrate a practical application of the invention, Ihave selected a meat cutting and slicing machine as an example of thevarious machines that contain the invention and shall describe theselected machine hereinafter. The

particular machine selected is shown in the accompanying drawings.

Fig. 1 illustrates a View of a vertical section of parts of a meatsawing machine. Fig. 2 illustrates'a side view of the band saw and themeans for removing the particles from the teeth of the saw. Fig. 3illustrates an end view of the parts shown in Fig. 2. Fig. 4 illustratesa view of a section taken on the plane of the line 4-4 indicated in Fig.3.

This application is a division of my applica-. tion, Serial No. 66,071,for a Meat cutting and slicing machine, filed February 2'7, 1936, PatentNo. 2,081,033.

In the, particular form of construction shown in the drawings, a bandsawl is rotatably supported and guided by a pair of wheels 2 and 4. Thewheel 4 is driven by a suitable motor and "drives the band saw androtates the wheel 2. The i Wheels and the driving means are supportedon' a frame comprising the base 5 and the standard "I. The wheel 4 issupported on the base 5, and the wheel 2 is supported in a suitablehousing 9 formed on the upper end of the standard I. During the sawingoperation, the meat is located upon the movable table 8 supported onrollers I0. Brackets I! are connected to the underside of the table, andthe rollers H) are rotatably supported in the brackets. The rollers movein channeled members. l2 that are supported on the base 5 and on thebrackets M connected to the base. The table 8 is provided with the upturned end part for engaging the meat to maintain the meat in positionon the plate as it is pushed against the saw I.

In the form of construction shown in the drawings, the band 'saw passesbetween a pair of brushes I1 and 58 supported on the base 5. The brushesI! and 18 are cylindrical in form and are provided with spindles 20. Thespindles 20 are rotatably supported in sleeves 2 I. The sleeves areconnected to a'block 22 that is supportedon a bracket 24 secured to thebase 5. The axes of the spindle 20 and the sleeves 21 are preferablyinclined downwardly and away from the cutting.

Preferably the block 22 is pivotally connected to thebracket 24 by meansof the stud bolt 21 and the bracket is. provided with a lug 28 thatengages the underside of the block to support the sleeves in the desiredinclined relation with respect to the vertical. When the band saw is tobe placed upon the wheels or removed therefrom, the brushes are swungupward, and when the band saw is replaced, the brushes are swung intotheir inclined position.

The brushes H and I8 are located on opposite sides of the saw I, and thepositions of the sleeves N that rotatably support the brushes are suchthat the brushes are pressed against the lateral surfaces of the sawwith suflicient pressure to bend the elastic bristles. The pressure ofthe bristles against the surface of the saw causes the brushes to rotateas the saw is moved. The bristles of the brushes adjacent to the teethof the saw intermingle and cooperate with each other as the brushes arerotated, to penetrate the spaces between the teeth and to-punch thematerial from the edges of the teeth and the corners formed between theedges. The elasticity of the brushes operates to wipe the cornersbetween adjoining teeth and snap the material outward from the teeth asthe bristles move downwardly with the saw in the rotation of thebrushes. Preferably, the brushes are formed of spirally or helicallyarranged rows of bristles and by reason of their inclined axialpositions carry the materials outwardly and downwardly from the edges ofthe teeth, the helical rows of bristles effecting a lateral movement ofthe material across the face of the sawand the edges of the teeth.Preferably the helical arrangement of the rows of bristles of one brushis opposite to that of the other of the brushes, that is, one will beformed to produce a right hand helix and the other will be formedtiguous bristles that come into engagement with the particles betweenthe teeth are disposed slightly more remote from the base portions ofthe teeth and progressively wedge the matter away from the corners ofthe teeth. As the teeth move past the bristles and are leaving the planeof the axis of the oppositely disposed brushes, the bristles arereleased and elastically snap away from the edges of the teeth and theside surfaces of the saw the material gathered by the saw. This willcause the removal of practically all of the material from the'band saw.

I claim:

In a sawing machine, a saw cleaning means comprising a pair ofcylindrically formed brushes, means ,for rotatably supporting thebrushes to press bristles of the brushes against the lateral surfaces ofthe saw and cause penetration of end parts of certain of the bristlesbetween the teeth of the saw and to rotate the brushes by the movementof the saw and to locate the axes of the brushes in a line inclined tothe direction of movement of the saw and upwardly toward the toothededge of the saw, the bristles of the brushes being formed in helicalrows to produce a lateral wiping action across the surfaces of the sawin a downward and outward direction from the teeth toward their pointsas the spirally located ends of the bristles of the brushes advanceprogressively toward the back edge of the saw to eject materialcollected between the teeth of the saw during the sawing operation.

CARL G. BIRO.

